Molding-machine sand-delivery mechanism.



No. 632,250. Patented Sept. 5, |899. H. C. COOPER.

MDLDING MACHINE SAND DELIVERY MEGHANISM. (Application med my s1, 1899.) (Nn Model.)

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STATES HARRY C. COOPER, OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 632,250, dated September 5, 1899.

Application filed May 31, 1899. Serial No, 718.864.. (No model.)

To @ZZ whom t may concern:

Be it known that I, HARRY C. COOPER, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, have invented a certain .new and useful Improvement in Molding Machine Sand Delivery Mechanism; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention has for its object the producv tion of whatIwill terma sand-delivery box for use more particularly in connection with the molding-machine shown and described in my concurrently-pending application filed June 8, 1899, Serial No. 719,817. In my said application I have shown and described a stationary sand-reservoir and sand-chute leading downward therefrom, a pressure-plate and movable pattern mechanism below, which when moved upwardly compresses the'sand between the pattern mechanism and the pressure-plate.

This invention relates particularly to the means whereby the sand is delivered from the stationary reservoir above the flask to a point below the pressure-plate and the opening in the pressure-plate through which the sand has been delivered is subsequently closed, so it can apply the pressure to the sand in the flask.

The invention consists in a combination of devices and appliances hereinafter described and claimed.

In the drawings, Figure l is a vertical section through my sand-delivery boxwith parts in elevation. Fig. 2 is a view, partly in section, at right angles to Fig. 1. Fig.V 3 is a horizontal section on line 3 3 of Fig. l.

In carrying out the invention, A represents the stationary sand-delivery chute leading from any suitable reservoir above.v Surrounding this chute and telescoping therewith is a sand-delivery box B. Journaled in any suitable stationary part-21s, for instance, C-are antifriction beveled rollers l), traveling in suitable grooves or guides D' in the side of the box B. The bottom of the box is curved,

as at B, and adjacent to the lower end of this curve and in the side of the box is an opening B2, through which the sand is delivered. In addition to the curved portion B' the end of the box is curved transversely,'as shown at B3. latter curve is a door B4 in the form of a removable slide, so that an opening may be provided at this point when desired. E represents the false flask, and extending from the side of the box B are lugs B5, carrying vertically-adjustable stops B6, which rest upon the false flask, the sand-box being thereby held up in its upper position. Adjustable screws M are also provided, by which the box is held in its upper position when a flask is used which is capable of passing through the opening in the pressure-plate, and the screws M perform the same function as the screws B6. On the bottom of the box is engaged a plate F', removably held in place by the screws F2.

In the present application I have not considered it necessary to show either the sandreservoir above the sand-chute nor the mechanism for moving the false flask upward nor the pattern parts and the mechanism for moving them upward to compress the sand between the pressure-plate F and the pattern parts. Suffice to say that when `the false flask E is released from its normal position and drops down onto the flask proper of the machine the sand-delivery box B is released and drops down until the lug BT strikes the lug B8 on the casing. This brings the upper edge of the opening B2 just below the pressure-plate F, as shown by dotted lines, Fig. l. The sand can now be delivered either through the opening B2 or, if desired, through both this opening and the opening caused by the removal of the slide B4, the inclines B B3 of the bottom directing the sand in the course desired. Now as the pattern parts and flask move upward the sand in the flask coming in contact with the plate F on the sand-box will move the sand-box up until the lug B7 comes in contact with the stop C' on the casing, when the upward movement of the sand-box will be arrested and the plate F will fill the opening in the pressure-plate and the said plate F' thereby constituting a part of the pressureplate. Of course at the end of the pressure the false flask E will have been returned npward and caught by its engaging device and In the sideof the box opposite to this IOO will thus hold the sand-box in place until the false iiask is again released.

l. In a molding-machine the combination with a pressure-plate and a sand-reservoir above said pressure-plate of a movable sanddelivery box or chute independent of the reservoir but communicating therewith and mechanism for holding said box or chute normally above the pressure -plate, said box adapted to drop down and deliver the sand below the pressure-plate, substantially as described. l

2. In a molding-machine the combination with a pressure-plate and a sand-reservoir above said pressure-plate of a movable sanddelivery box or chute independent of the reservoir but communicating therewith Vand mechanism for holding said box or chute normally above the pressure plate, said box adapted to drop down through the pressureplate and deliver the sand under the pressureplate, substantially as described.

3. In a molding-machine the combination with a pressure-plate and a sand-reservoirA above said pressure-plate said pressure-plate provided with an opening, of a sand-delivery box independent of the reservoir but communicating therewith and means for normally holding it above the pressu re-plate, said box adapted to drop down through the opening in the pressure-plate and deliver -the sand and a plate on the bottom of the box adapted to lill said opening in the pressure-plate when the mechanism for holding said box or chute norv mally above the pressure-plate, said box adapted to drop down and deliver the sand below the pressure-plate and said box provided withan inclined bottom and an opening adjacent to the incline, substantially as described.

6. In a molding-machine a sand-delivery chute or box having its bottom inclined in two directions one at an angle to the other and an opening in each side of the box opposite the incline, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

HARRY C. COOPER.

XV tnesses:

GERTRUDE IIEIDELBERGER, Lu'ln S. ALTER. 

